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Explanation:
Volume of solute = 12 ml
Volume of solution = volume of solute + volume of solvent
Volume of solvent = volume of solution – volume of solvent
= 100 – 12 = 88 ml
concentration=volume of solutevolume of solute+volume of solvent×100
12=1212+x×100
x=88
Hence, 88 ml of water will be added to 12 ml of alcohol in order to prepare a concentration 12%.
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